SPWLA Today Newsletter Vol 4 Issue 6 Nov 2021 SPWLA Today Newsletter Vol 4 Issue 5 Sept 2021 SPWLA Today Newsletter Vol 4 Issue 4 July 2021 SPWLA Today Newsletter Vol 4 Issue 3 May 2021 SPWLA Today Newsletter Vol 4 Issue 2 March 2021 SPWLA Today Newsletter Vol 4 Issue 1 Jan 2021